Double glazing



June 17, 1941. E E PHlLLlPs ETAL 2,246,075

DOUBLE GLAZING Filed April 12. 1939 Patented June 17, 1941 DoULE GLAZINGErnest E. Phillips, Leaside, Ontario, and Walter R.

l Packman,

Toronto, Ontario, y Canada;

said

Packman assignor to said Phillips Application AprillZ, 1939, Serial No.267,454

3 Claims.

The principal objects of this invention are to provide a simple butefficient double glazing attachment which may be easily applied withoutalteration in the standard sash formation and which will be tightly heldin place in a manner which will permit the ready removal or replacementthereof.

T'he principal features of the invention reside in the novelconstruction of the double glazing frame and a special resilientretaining means for securement to the sash whereby the double glazingframe is resiliently urged into snug sealing engagement with the sashbut is capable of ready removal by flexing of the resilient retainingmeans.

In the drawing Figure 1 is a fragmentary cross section through a portionof a sash showing a preferred form of the present invention appliedthereto.

Figure 2 is a View similar to Figure 1 showing a modification of thepresent invention.

Figure 3 is a fragmentary corner view of a double glazing frame such asshown in Figures l and 2, the frame portion being broken away todisclose the underlying resilient retaining means.

Many forms of structures have been devised in connection with doubleglazing of windows but these in many cases are of a complicated natureor require sashes of special cross section or the provision of recesses.

The present invention has been devised to eliminate these objections andto enable the mounting of a double glazing frame directly on anystandard window sash, and in the preferred form of the inventionillustrated in Figures 1 and 3 a special retaining. member I is providedwhich preferably comprises a strip of resilient metal of angle shapedcross section having a ange 2 adapted to flatly overlie the inner face 3of the sash 4 with or without a sealing strip 5 therebetween.

The other flange portion 5 extends perpendicular to the face 3 of thesash and is here shown provided with an inwardly rolled or beadedextremity 1.

The strips I are preferably placed in a rectangular arrangementpresenting mitred corner joints 8 and with the inner edge of the flange5 in register with an edge 9 of the sash to provide for accuratepositioning.

A double glazing frame I0 is shown in Figure l as formed of a strip ofmetal, the edge portions of which are doubled back upon themselves andturned laterally to form a channel II within which the edges of thesecondary glass I2 are sealed. l

The intermediate portion 'of the stripis bent to provide a tapering orbevelled area I3, which, When the frame is pressed into position, willen'- gage the beaded portion 'I of the spring-retaining means and spreadthese su'iciently to allow the shoulder portion I4 to pass therebeyond.The portion of the strip on the other side of the shoulder I4 ischanneled to provide a sloping wedge surface I5 which is adapted toco-operate with the beaded portion 'l of the retaining means so that theresilient inward pressure of the latter on the sloping wedge surfaceswill exert an inward pressure on the frame I0 tending to urge the sameinto snug non-rattling relation to the sash, and a sealing strip of feltor the like I6 may be arranged between the inner portion of the frame I0and the flange 5 to be retained under sealing compression by theresilient wedging engagement referred to.

The frame-forming strip is ared outwardly to overhang the beadedportion] and4 to extend beyond the flange 6 and the arrangement is suchthat a space I'I will be provided between the overhanging portion andthe beaded portion 'I as illustrated in Figure 1. This provides anadvantageous arrangement for the insertion of a prying tool I8. Withthis arrangement a gentle pull on the inserted member I8 will exert aneffective prying action on the frame while a constricting force will beapplied to the beaded portion 'I as well as a spreading action on theflanges 6, providing for the very easy removal of the frame.

In the modification shown in Figure 2 the frame I0 is shown formed of astrip of extruded metal having the tapered surface I3 and wedgingsurface I 5 arranged to cooperate with the resilient beaded portion 'I'as defined in connection with the corresponding surfaces I3 and I5 ofFigure 1.

What we claim as our invention is:

1. The combination with a standard sashl having its innermost surfacedisposed in a iiat plane, of a double glazing frame to be applied fiatover said innermost sash surface and formed with a sloping Wedgingsurface about the perimeter, and resilient retaining members formed ofstrips of spring metal of substantial rightangular flanged form disposedin a rectangular frame formation and having one flange portion securedat to the said innermost sash surface in such relation as to beoverlapped and concealed by the said frame and having the other angeportion extending substantially perpendicular to said innermost planeforming a resilient frame continuously embracing the perimeter of saiddouble glazing frame in resilient pressure-holding relation in contactwith said sloping surfaces.

2. The combination with a standard sash having its innermost surfacedisposed in a flat plane, of a double glazing frame for application oversaid innermost sash surface, said frame being formed with a wedgingsurface extending about the perimeter, and strips of spring metal havingange portions for attachment to the said innermost surface of the sashin underlying relation to the said frame and having inturned portionsfor resilient wedging engagement with said wedge surfaces, said framepresenting rigid flange portions overhanging and spaced from theinturned portions of said spring strips, and adapted to form a space forthe reception of a frame-removing instrument whereby a prying action maybe exerted between said overhanging anges and the inturned portions ofsaid spring strips to remove the frame without marring of the innersurface of the sash.

3. The combination with a standard sash having its innermost surfacedisposed in a flat plane, of a double glazing frame formed to overlapsaid innermost plane surface of the sash and presenting a locking grooveabout the per imeter spaced inwardly from said innermost sash surface,and spring-retaining members secured to the sash and having beadedportions spaced inwardly beyond said innermost sash slu'face a distanceslightly less than the inward spacing of said frame groove to engage theoutermost wall of said groove in pronounced wedging action to therebyretain the frame in pressure engagement with the sash, said beadedportions being of resilient form confined within the plane of the doubleglazing frame and return-bent toward thelatter and outwardly tosubstantial circular form with the free end portion of the resilientbead presenting the major resilient wedging engagement with the groovewall whereby to facilitate placing and removal of the double glazingframe. y

ERNEST E. PHILLIPS. WALTER R, PACKMAN.

